I had my last period on the 26th july and had sex on the 08th and 09th of august - i have not gone on my periods now in august i have concessional light cramps and just a speck of blood , negative pregnant test at 1 day late should i repeat test?

Maybe in a week: Home pregnancy tests are very accurate and not affected by foods, herbs, common illnesses, sexually transmitted diseases, or medications. A correctly done urine test gives a reliable result 3 weeks after sex (3 weeks after when conception might have happened) or 1 week after missing a period. If done sooner, a positive result is likely real, but a negative result may be due to testing too soon.